Belief mechanism fob storage batteries



W. P. LOUDGN.

RELIEF MECHANISM FOR STORAGE BATTERIES.

APPLICATION FILED JAN. 1, 1918.

1 ,363,606. Patented Dec. 28-, 1920.

WI TNFSS: I IN VEN TOR. 4 W War/"en P Loam 0r) AQAM ATTORNEY.

UNITED OFFICE.

WARREN P. LOUDON, OF NIAGARA FALLS, NE'W' YORK, ASSIGNOR TO U. S. LIGHT &

HEAT CORPORATION, OF NIAGARA FALLS, NEW! YORK.

YORK, A CORPORATION OF NEW Application filed January 7,1918.

Z '0 all whom it may concern:

Be it known that I, WARREN P. Lennon, a citizen of the United States, residing at Niagara Falls, in the county of Niagara and State of New York, have invented new and useful Improvements in Relief Mechanism for Storage Batteries, of which the following is a specification.

The present invention relates to relief mechanism for storage batteries.

More particularly the present invention relates to mechanism whereby the gas may escape from the interior of the storage battery cell but which will prevent the escape of the electrolyte though the cell be tipped at a great angle or turned up-side-down.

The invention is particularly applicable to portable storage batteries or storage batteries used in aeroplanes, which are carried at a great variety of angles.

An object of the present invention is to provide a relief mechanism which will permit the escape of gases from the interior of the storage battery cell but which will effectually seal said cell to prevent the escape of electrolyte if the cell should be tipped at such an angle that the electrolyte would tend to escape.

A further object is to provide relief mechanism of the kind referred to which is cheap to manufacture, sturdy in construction and infallible in operation.

Further objects will be apparent as the description proceeds.

Referring to the drawings Figure 1 represents a sectional view of one embodiment of the present invention.

Figs. 2 and 3 represent plan views of the mechanism with parts removed.

A part of the cover of a storage battery cell is indicated by the numeral 1. Extending upwardly from said cover 1 is a collar 2, which collar surrounds an aperture 3 communicating with the interior of the cell. Within the collar 2 are three or more circumferentially spaced wedge-shaped portions 4 which provide radiating guide-ways extending from the center to the periphery of the space within said collar. Said guideways have inclined bottoms which rise from the periphery toward the center of the space within said collar. Each of the radial guide-ways is indicated by the numeral 5.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Serial No. 210,748.

There is thus formed in the space within the collar 2 a formation which may be described as being in the general form of the frustum of a cone provided with wedgeshapcd portions to form the radial guideways 5. Said frustum of a cone is provided with radial slits (i communicating with the aperture 3, as clearly indicated in Figs. 1 and 2. The slits (3 should be inclined toward the aperture 3 and should be of sufficient size to readily permit the passage of the elr-ictrolytc. Or, if desired, holes may be provided through the cover 1 at the outer ends of the guideways 5.

.llounted within each of the guide-ways 5 is a ball 7, preferably of lead. The several balls will be preferably of the same size. lllounted upon said balls 7 is a diaphragm 8 upon which is mounted a button 9. The diaphragm 8 is provided with a plurality of 'circumferentiallyplaced fillets 10. Said diaphragn :hould loosely fit within the collar 2. The member 8 may take other forms than a diaphragm, so long as the function is preserved of contacting with and being operable by the balls 7.

Mounted upon the collar 2 is a cap 11 provided with a central aperture 12. Said cap 11 may have screw-threaded engagement with the collar 2 and may be sealed thereto by means of the gasket 13. Mounted on the inside of the cap 11 is a gasket 14 provided with a central aperture 15. This aperture 15 should be in juxtaposition to the button 9. Thecollar 11 is cored out immediately above the gasket 14 to form a space having a conical wall 16. This conical wall 16 forms a seat against which the gasket 14 may rest.

The collar 2 has been illustrated as being integral with the cover 1. It will be understood, however, that such integral construction is not necessary and that the mechanism bounded by the collar 2 may be made separately from the cover and mount ed thereon by means of screw-threads or in any other preferred manner, providing thereby a filler cap in the same mechanism. Furthermore, the members 7 need not be balls, but may be any type of roller or may be more sliding members moving in the guide-ways 5.

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